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kconfig: sym_expand_string_value: allow for string termination when reallocing

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When expanding a parameterised string we may run out of space, this
triggers a realloc.  When computing the new allocation size we do not
allow for the terminating '\0'.  Allow for this when calculating the new
length.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft 2010-11-01 21:01:44 +00:00 committed by Linus Torvalds
parent e99d11d199
commit 020e773f6b
1 changed files with 1 additions and 1 deletions
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2
scripts/kconfig/symbol.c
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@ -875,7 +875,7 @@ const char *sym_expand_string_value(const char *in)
symval = sym_get_string_value(sym);
}
newlen = strlen(res) + strlen(symval) + strlen(src);
newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
if (newlen > reslen) {
reslen = newlen;
res = realloc(res, reslen);